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不多说,直接上代码,自己看效果。(可以写到项目中装个X)
VCUtil.h (工具类)
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
/** 弹出alertView方法封装 */
extern void alert(NSString* str);
/** 封装常量 */
extern const NSString *str;
VCUtil.m
#import "VCUtil.h"
//alert 方法的实现体
void alert(NSString *str)
{
UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:str message:nil delegate:nil cancelButtonTitle:@"好" otherButtonTitles: nil];
[alertView show];
}
//str 常量的值
const NSString *str = @"wode";
ViewController.m
#import "ViewController.h"
#import "VCUtil.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
//调用自己封装的方法;
alert(str);
}
@end
//点击屏幕的效果。
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原文地址:http://www.cnblogs.com/wanglizhi/p/5589326.html